Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses.

Rebate details:

Rebate is valid on professional and Rapidfire spark plugs purchased or installed between 01/01/2016 and 12/31/2016. Rebate offer is on ACDelco Professional Iridium ($2 per plug), ACDelco Professional Double Platinum ($1.50 per plug), ACDelco Rapidfire Performance Single Platinum($1.00 per plug) and ACDelco Professional Conventional ($.50 per plug).